feat(uptime): Add request{method,header,body} options

Author: evanpurkhiser

examples/uptime-configs/1/example-post.msgpack

@@ -0,0 +1 @@
+��subscription_id� d7629c6c82be4f679ee78a0d977856d2�url�http://sentry.io�interval_seconds�
,�timeout_ms�
��request_method�POST�request_headers��Authorization�Bearer 12345�Content-Type�application/json�X-My-Custom-Header�example value�request_body�{"key": "value"}

schemas/uptime-configs.v1.schema.json

@@ -29,6 +29,30 @@
         "url": {
           "description": "The actual HTTP URL to check.",
           "type": "string"
+        },
+        "request_method": {
+          "description": "The HTTP method to use for the request.",
+          "type": "string",
+          "enum": [
+            "GET",
+            "POST",
+            "HEAD",
+            "PUT",
+            "DELETE",
+            "PATCH",
+            "OPTIONS"
+          ]
+        },
+        "request_headers": {
+          "description": "Additional HTTP headers to send with the request",
+          "type": "object",
+          "additionalProperties": {
+            "type": "string"
+          }
+        },
+        "request_body": {
+          "description": "Additional HTTP headers to send with the request",
+          "type": "string"
         }
       },
       "required": ["subscription_id", "interval_seconds", "timeout_ms", "url"]